The Policy Directive has been revised to clearly outline the role of PHOs in supporting clinicians and ensuring systems are in place that promote safe VTE prevention practices. It also removes reference to the NHMRC Clinical Practice Guideline for the Prevention of Venous Thromboembolism in Patients Admitted to Australian Hospitals (2009) which was rescinded in August 2016, and adds clearer guidance for VTE prevention in palliative care, mental health and day surgery patient cohorts.